Combination dispensing and siphoning nozzle and pumping means



Sept. 20, 1955 w. Y. BROWN COMBINATION DISPENSING AND SIPHONING NOZZLE AND PUMPING MEANS 3 Sheets-Sheet 1 Filed Oct. 1'7, 1952 0 U l "H e ELTIIFIL.-- m 4 I J 0 n INIJIIIIIIIQ w M I #:FIII .l 1 1 1 INVENTOR: WILLIAM Y. BROWN.

ATTORNEYS Sept. 20, 1955 w. Y. BROWN 2,718,343

COMBINATION DISPENSING AND SIPHONING NOZZLE AND PUMPING MEANS Filed Oct. 17, 1952 3 Sheets-Sheet 2 WILLIAM Y. BROWN, INVENTOR.

Kim-W ATTORNEYS Sept. 20, 1955 w. Y. BROWN COMBINATION DISPENSING AND SIPHONING NOZZLE AND PUMPING MEANS 3 Sheets-Sheet 3 Filed Oct. 17, 1952 WILLIAM Y. bzowN,

IN VEN TOR.

ATTORNEYS COIVIBINATION DISPENSING AND SIPHONING NOZZLE AND PUMPING MEANS William Y. Brown, Charlotte, N. C., assignor to Brown Grease Gun Company, Charlotte, N. C., a corporation of North Carolina Application October 17, 1952, Serial No. 315,250

Claims. (Cl. 226-22) This invention relates to an improved nozzle and pumping means for dispensing liquids and it is the primary object of this invention to provide a nozzle which is particularly designed for dispensing liquid lubricants, such as oil and the like, and wherein means are provided for automatically siphoning the liquid dispensed from the nozzle back into the nozzle and thence into the container or reservoir from which the liquid was originally pumped to the nozzle upon the end of the nozzle becoming submerged in the liquid dispensed therefrom into a container, such as an oil cup or the like, thus insuring that the liquid dispensed from the nozzle will not overflow the container into which the liquid is dispensed.

The improved nozzle may be used for dispensing any kind of liquid, but is primarily designed for filling oil cups or reservoirs such as those associated with the spindles of textile spinning frames, twisters and the like. As is well known to those familiar with the art, the spindles of textile machines must be lubricated quite frequently and it is important that the oil is not permitted to overflow the oil cups or reservoirs of the spindles because, otherwise, the oil will attract lint to the spindles and will also be picked up by the yarn which is wound onto the bobbins carried by the spindles, thus resulting in an inferior product.

It is therefore a more specific object of this invention to provide a nozzle comprising a pair of parallel juxtaposed tubular members, having hook-like free ends, and which tubular members form closely adjacent channels or passageways including a discharge passageway and an intake passageway.

The discharge end of the tubular member having the discharge passageway extends slightly beyond the intake end of the tubular member having the intake passageway and suitable means are provided for pumping oil or the like into the discharge passageway or channel to be discharged from the discharge orifice of the nozzle while a suction means is provided for creating suction in the intake passageway, the suction means and the pump for the discharge passageway both communicating with a common reservoir in which a supply of oil may be provided.

Thus, upon an oil cup or the like becoming substantially filled with oil, the free end of the nozzle having the discharge and intake passageways therein will become submerged in the oil dispensed through the discharge orifice which communicates with the discharge passageway and, since the capacity of the suction means is substantially the same or greater than the capacity of the discharge means, the oil or other liquid discharged through the discharge orifice of the nozzle will be drawn back into the reservoir through the intake channel or passageway at a faster rate than discharged, thus insuring that the level of the oil in the oil cup cannot rise substantially above the level of the inlet orifice which communicates with the intake channel.

Also, in the event that the operator does not have the free end of the nozzle inserted deeply enough into the oil States Patent 0 ice cup as the oil is directed thereinto, the operator may readily lower the level of the oil in the oil cup, or even empty the oil cup, by merely inserting the free end of the nozzle deeper into the oil cup, since the suction means communicating with the intake channel normally has greater capacity than the means employed for discharging the oil through the discharge channel and orifice.

In order that the operator may readily determine when an ample amount of oil or the like has been introduced into the oil cup or other receptacle, there is provided a translucent or transparent tube interposed in the pipe connections between the reservoir and the intake channel or passageway whereby, upon the free end of the nozzle becoming submerged in the oil or other liquid discharged therefrom, the oil passing from the intake channel back to the reservoir will be visible to the operator.

it is another object of this invention to provide a dispensing apparatus of the character described wherein a pair of constantly driven diaphragm pumps are employed, the first of which creates exhaust pressure in the discharge channel or passageway, to pump the oil from the reservoir through the discharge passageway, and the second of which creates suction in the intake passageway to normally pump air through the intake passageway and which, upon being submerged in oil or the like, pumps the oil through the intake passageway or channel and back into the reservoir.

A unique valve mechanism is provided, which operates in conjunction with a manually operable fluid discharge control valve for controlling the flow of oil or other liquid from the reservoir into the discharge passageway or channel of the nozzle, to admit air into the second diaphragm pump at a point between the air inlet passageway or channel and the second pump when said fluid discharge control valve is closed. Also, since the fluid in the first pump is under pressure when the fluid discharge control valve is closed, means are provided to permit the driving means for the first pump to continue operating while the diaphragm thereof remains stationary thereby obviating the necessity of repeatedly starting and stopping said driving means.

Some of the objects of the invention having been stated, other objects will appear as the description proceeds, when taken in connection with the accompanying drawings in which Figure l is a side elevation of a mobile lubrication apparatus showing the improved nozzle assembly and the improved pump means therefor in association therewith;

Figure 2 is an enlarged top plan view of the structure shown in the left-hand portion of Figure 1 omitting the improved nozzle and the flexible pipes or hose extending therefrom to the pumping means;

Figure 3 is an enlarged top plan view of the improved nozzle shown in the upper right-hand portion of Figure 1;

Figure 4 is a side elevation of the improved nozzle looking at the lower side of Figure 3;

Figure 5 is another side elevation of the improved nozzle looking at the opposite side from that shown in Figure 4;

Figure 6 is a longitudinal vertical sectional view through the improved nozzle taken substantially along the line 66 in Figure 3 and showing the same in association with a partially filled oil cup shown in vertical crosssection;

Figure 7 is a view similar to Figure 6, but showing the oil cup filled to the desired level and illustrating how the excess oil is returned through the nozzle;

Figure 8 is an enlarged fragmentary vertical sectional view taken substantially along the line 88 in Figure 5;

Figure 9 is an enlarged detail of the open ends of the discharge and inlet tubes of the nozzle shown in the lefthand portion of Figures 8 and 9;

The pipe 79 extends downwardly through the washer 81 and terminates closely adjacent the portion of the bottom wall of the carriage casing 10 which forms the bottom wall of the reservoir 21. The flexible pipe 26 is connected to a projection 83 integral with the housing of the diaphragm pump 40 by means of a fitting 84 and the projection 83 is provided with a discharge passageway 85. The housing of pump 40 has a relatively large chamber 86 therein with which the inlet passageway 82 communicates and, communicating with the chamber 86 is a channel or passageway 87. The housing of the pump 40 is also provided with a similar channel or passageway 90 which communicates with the exhaust passageway 85 and is closed at its end adjacent the chamber 86 by a press fitted disk 98 (Figures 12 and 14). The passageway or channel 87 is partially closed by a press fitted disk 99 which is provided with a restriction 91 normally closed by a spring pressed valve or disk 92 urged thereagainst by a compression spring 93, which bears against a partition 94.

The partition 94 is provided with apertures 95 which communicate with the channel or passageway 87 and the left-hand side of the chamber 75 in Figure 12. The partition 94 is also provided with an aperture 96 which communicates with the channel or passageway 90 and the left-hand portion of the chamber 75. This aperture 96 is normally closed by a spring pressed valve member or disk 97 which is disposed adjacent that side of a closure member 100 remote from the outlet or exhaust passageway 85. The closure member 100 is also provided with apertures 101.

The partition 94 has a projecting stem 102 integral therewith, which defines the proximal Wall portions of passageways 87, 90, and against which a screw 103 fits. The free end of the stem 102 has a threaded bore therein into which is threaded a shaft 104 after it passes through a hole in the screen 103. The shaft 104 has a compression spring 160 disposed therearound which serves to hold the strainer screen 103 in proper position. The outer end of the shaft 104 is threaded and penetrates a cap 162 which, with the aid of a gasket 163, closes the chambers or passageways 86 and 87. A nut 164 is threadably mounted on the outer end of shaft 104 to confine the cap 162 in position.

It is thus seen that when the manually-operable valve of the improved nozzle 35, to be presently described, is opened and the electric motor 67 is running, vibration or reciprocation of the diaphragm 52 will draw the oil or other liquid through the pipe 79 and discharge the same through the pipe 36.

To this end, the pump 40 operates as follows:

Each time that the plunger 43 is pulled outwardly by the yoke arm 55 moving from left to right in Figures 12 and 13, the diaphragm 52 moves therewith, thereby creating a negative pressure in the left-hand portion of chamber 75 to cause the valve member 92 to move away from the restriction 91 in the channel or passageway 87. The negative pressure or suction created by the diaphragm 52 also causes the oil to be drawn upwardly through the pipe 79, through chamber 86, through channel or passageway 87, through the restriction 91 and apertures 95 and into the left-hand portion of the chamber 75. Upon each return stroke of the diaphragm; that is, upon each movement of the diaphragm 52 from right to left in Figure 12, the pressure in the chamber 75 will unseat the valve 97 and the oil will be forced through the apertures 96 and 101 and the chamber or channel 90 and, thus, through the exhaust or outlet passageway 85 and into the pipe 36, from whence the oil will flow through the improved nozzle 35 to be later described.

The pump 40 operates in substantially the same manner as the pump 40 with the exception that the diaphragm 52 causes the air or fluid to flow from the pipe 27, through the inlet passageway 82 to be discharged through the outletor exhaust passageway 85 back into the reservoir 21, since the extension or projection 80' penetrates that portion of the top wall 16 of the carriage 10 which forms the top wall of the reservoir 21 and is sealed in engagement therewith by a resilient Washer 81'. It is to be noted that the open lower end of projection is spaced above the fluid level L.

Now, it is evident that when the valve of the improved nozzle 35 is closed, the oil or other liquid cannot pass through the pipe 36, with the result that the pressure of the oil or liquid will build up in the left-hand portion of the chamber 75 and will be greater than that of the compression spring 76 and will thus cause the collar 60 on the reduced portion 54 of the plunger 53 to remain stationary although the arm 55 of the yoke member 56 moves inwardly or toward the pump 40 and away from the collar 60.

Although fluid is present in the pump 40, the symbol therefor is omitted to avoid confusion and the arrows in the right-hand portion of Figure 12 indicate the direction of the flow of air caused by pump 40. Also, in Figures 6 and 7, the fluid is indicated by the recognized symbol only in the oil cup C, the arrows in the nozzle assembly 35 indicating the direction of flow of the fluid only.

Nozzle Assembly The improved nozzle assembly 35 comprises a substantially rigid tubular member 105 (Figures 3 to 8, inclusive) which has corresponding ends of respective upper and lower tubular members 106, 107 fixed therein and extending longitudinally thereof, the upper tubular member 106 being a discharge or exhaust tubular member and the lower tubular member 107 being an inlet or siphoning tubular member. The tubular members 106 and 107 may be made in several different ways and are shown as being semi-circular in cross-section. One way in which the tubular members 106 and 107 may be formed is to split a tubular member, which is circular in cross-section, longitudinally thereof and weld or otherwise secure a diametrically extending partition or wall 108 therebetween and, thereafter, weld or braze the two halves of the tubular members together (Figure 8).

In any event, the tubular members 106 and 107 are necessarily respectively formed with a longitudinally ex tending discharge or exhaust passageway or channel 110 and an inlet or siphoning passageway 111. The outer ends of the tubular members 106 and 107 extend beyond the corresponding end of the rigid tubular member 105 and are curved downwardly to form neck-like nozzle ends 112 and 113 provided with respective discharge and inlet orifices 114 and 115. The nozzle end 113 is cut at an angle at the orifice 115 (Figure 9) and is covered by a screen 115a, suitably secured thereto, to prevent lint and other foreign matter from being drawn into the inlet tubular member 107. It is to be noted that the neck 112 of the tubular member 106 extends slightly beyond the orifice end 114 of the tubular member 107. The inner ends of the tubular members 106, 107 terminate intermediate the ends of the tubular support 105 therefor. The inner end of the channel 110 of the tubular member 106 is closed, as at 116, and the inner end of the channel 111 of the tubular member 107 communicates with the extended portion of the rigid tubular member 105.

The rigid tubular member 105 has one end of a sight tube 117 fixed thereon which is made from a translucent or transparent material, preferably a transparent plastic material. The other end of the tube 117, which may also be termed a siphoning tube, is coupled to the free end of the flexible pipe or conduit 37. The walls of the discharge tubular member 106 and the tubular support 105 are provided with coinciding openings or apertures 118 and one end of a pipe elbow 120 is suitably secured to the pipe 105, as by welding, and communicates with the apertures 118.

The end of the pipe elbow 120 remote from the pipe 105 is connected to a manually operable regulator valve 121 of any desired construction and which may be constructed 9 descriptive and generic sense only, and not for purposes of limitation, the scope of the invention being defined in the claims.

I claim:

1. Dispensing apparatus comprising a nozzle assembly for filling receptacles with liquid from a source of supply, said assembly comprising an elongated member having first and second substantially parallel passageways therein and extending substantially longitudinally thereof, means ccmmunicatively connecting corresponding ends of said passageways with said source, the other ends of said passageways being open, means for forcing liquid from said source through said first passageway for filling a receptacle, means for creating suificient suction in the second passageway to withdraw the liquid from said receptacle, upon the open end of the second passageway being closed by said liquid, to return the liquid to said source, a control valve in the first passageway for opening and closing the first passageway, a vent pipe communicating with an intermediate portion of the second passageway having an opening therein, a second valve in the vent pipe, means for moving the control valve and means connecting the second valve to the means for moving the control valve to open the opening in the vent pipe when the control valve is moved to closed position.

2. In an apparatus for filling receptacles with liquid, said apparatus having a reservoir adapted to contain a supply of liquid; the combination of a first pump for pumping liquid from said reservoir, a second pump for normally pumping air into said reservoir, an improved nozzle assembly comprising a pair of first and second substantially parallel juxtaposed tubular members each having a longitudinally extending channel therein, the open end of the second tubular member extending beyond the open end of the first tubular member, a pipe connection between the first tubular member and the first pump, a manually operable control valve interposed in said piped connection between the first tubular member and the first pump, and a piped connection between the second tubular member and the second pump whereby said second pump creates suction in said second tubular member, whereby said valve, upon being opened, permits the first pump to pump liquid from the reservoir to be discharged through the first pipe and whereby, upon a receptacle being filled to a level slightly above the open end of the second tubular member, the second pump will cause any additional liquid directed into the .second receptacle to be returned to said reservoir through the second tubular member, said piped connection between the second tubular member and the second pump having an orifice therein, closure means for said orifice, and means responsive to opening and closing said control valve for respectively closing and opening said orifice whereby, upon said control valve being closed, air may enter said orifice thereby preventing the creation of the suction at the open end of the second tubular member.

3. Apparatus for filling receptacles with liquid from a source of supply, said apparatus comprising first and second juxtaposed substantially parallel tubes, first and second piped connections connecting the respective first and second tubes with said source, first and second oppositelyarranged pumps interposed in the respective first and second piped connections, first and second movable plungers operatively connected to the respective first and second pumps, means for driving said pumps comprising a driven eccentric cam, a pair of arms contacting opposite points on the periphery of said cam, the proximal ends of said plungers each slidably penetrating a corresponding arm, collars fixed on the proximal ends of said plungers between said arms, resilient means normally urging said collars toward the corresponding arms, a manually operable valve interposed in said first piped connections at a point between said first pump and said first tube whereby, when said valve is open, both of said plungers are reciprocated by said cam, said first pump being arranged to pump fluid from the source through said first tube, and said second pump being arranged to draw air into the second tube toward said source whereby, upon said valve being closed, fluid pressure thus created in said first piped connections restrains said first plunger and said second plunger reciprocates independently of the first plunger with continued rotation of said cam.

4. Liquid dispensing apparatus comprising a discharge diaphragm pump and an intake diaphragm pump with common driving means each having lost motion means therein, a discharge pipe connected to the discharge side of the discharge pump, a suction pipe connected to the intake side of the intake pump, a nozzle having a discharge tube connected at one end to the discharge pipe, said nozzle also having a suction tube disposed alongside the discharge tube and having one end connected to the suction pipe and having its other end stopping short of the discharge end of the discharge tube, a valve in the discharge pipe for controlling the flow of liquid through the discharge pipe, operating means for the valve, means allowing ingress of air into the suction pipe intermediate its ends, and means controlled by movement of the valve operating means to move the valve to open position for closing the means allowing ingress of air into the intermediate portion of the suction pipe.

5. Liquid dispensing apparatus comprising a discharge diaphragm pump and an intake diaphragm pump with common driving means each having lost motion means therein, a discharge pipe connected to the discharge side of the discharge pump, a suction pipe connected to the intake side of the intake pump, a nozzle having a discharge tube connected at one end to the discharge pipe, said nozzle also having a suction tube disposed alongside the discharge tube and having one end connected to the suction pipe and having its other end stopping short of the discharge end of the discharge tube, a valve in the discharge pipe for controlling the flow of liquid through the discharge pipe, operating means for the valve, means allowing ingress of air into the suction pipe intermediate its ends, and means controlled by movement of the valve operating means to move the valve to open position for closing the means allowing ingress of air into the intermediate portion of the suction pipe, and a transparent sight tube interposed between said suction tube and said suction pipe to indicate whether liquid is being withdrawn through the suction tube and pipe.

References Cited in the file of this patent UNITED STATES PATENTS 1,325,991 King Dec. 23, 1919 2,026,601 Young Jan. 7, 1936 2,126,847 Weiss Aug. 16, 1938 2,369,694 Trippensee Feb. 20, 1945 2,401,124 Walker et al May 28, 1946 

